Ventilating-screen.



H. S. WILSON.

VENTILATING SCREEN.

APPLICATION FILED MAY 7, 1914.

f; Patented June 1, 1915.

THE NORRIS PETERS C0,. PHOTO-LITHO.. WASHINGTON. D

TNT FFIQ.

ONE-HALF '10 HENRY 1?.

REA, OF IBELLEVUE, KENTUCKY.

VENTILATINGr-SCREEN.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed May 7, 1914.. Serial N 0. 837,048.

To all whom it may concern Be it known that I, HOMER S. WJLSON, citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Ventilating-Screens and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in ventilating screens for windows and particu larly ventilators of that class used in connection with Pullman car windows.

In the use of ventilating screens as here-.

tofore constructed where a hood has been employed, it has been found that the motion of the car created a suction which was so great that air was forced through the screen proper, in the form of a draft and carried with it into the car, dust, cinders or moisture, much to the discomfort of the occupants of the car, and the chief object of my invention is to obviate this objection and by my improved construction to provide a ventilating screen which will prevent an undue draft and also the entrance of dust, cinders or moisture to the car.

The further objects of my invention are to provide a device of this character which is simple in construction, eflicient in operation and durable in use.

My invention is fully described in the following specification, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings, Figure 1 is an outside front view of the lower portion of a car window having my improved ventilator screen attached thereto. Fig. 2 is an interior view of the same. Fig. 3 is a vertical section on the line 38 of Fig. 1. Fig. 4 is a perspective view of one of the ends of my improved ventilating screen. Fig. 5 is a detail, partly in section showing a preferred form of latch used for holding the screen in the ventilator frame.

In the drawings, 1 designates the sill of a car window and 2 the sides of the frame. 4 represents the lower sash of the window.

My improved ventilator comprises the frame 5 which has a movable ortion 6 connected thereto by the hinges This movable portion is adapted to swing on its pivots toward the frame 5 for the purpose of inserting the ventilator in a window. The free end of the frame 5 and the free end of the movable part 6 are beveled vertically as shown at 8 for the purpose of facilitating the insertion of the ventilator in the window and packing 9 is provided on the top and bottom of said frame and movable part to afford a tight joint between the ventilator, the win dow sill 1 and the lower bar of the window sash 1.

The frame of the ventilator is provided above a line extending longitudinally of said frame midway its vertical height, with a rectangular aperture 10, the lower portion of said frame being closed. A screen 11 in a frame 12 is removably secured in said aperture by clips 13. Each of these clips 13 comprise wings 18 pivotally mounted on a screw 13 which is inserted in the frame 5, adjacent to the aperture 10. In use, these wings 13 would work on their pivots and by the jar of the moving train might release the screen frame 12 and allow the same to become disengaged from the frame 5. To prevent this, I provide locking screws 13 which have Wings 13 for the ready turning of the same, to allow the wings 13 to be turned to remove the screen. This form of clip while permitting the screen to be easily removed from the frame, also prevents the same from accidental dislodgment. The object in making the screen movable is for the purpose of facilitating the cleaning of the hood 16, hereinafted described, and also to allow a new screen to be quickly inserted when the old one becomes unfit for further use.

A hood 14 is provided on the outside of the window and said hood comprises the ends 15 and the main portion 16. The main portion, which is preferably composed of metal, is permanently secured to the upper end of said frame 5 above the aperture 10. The ends 15 of said hood gradually slope outwardly from their upper extremities, downwardly to apoint or bulge 20 below the horizontal center of the same, when they turn sharply inwardly. The main portion 16 of the hood is secured on its lateral edges to the ends 15 and said main portion extends downwardly nearly to the lower edge of the frame 5.

In operation, the movable part 6 of the frame 5 is swung toward the frame and the device is inserted in the car window. When the train of which the car is a unit, is set in motion, air laden with cinders, dust, smoke or vmoisture, is sucked up into the hood, through the restricted opening at its lower side thereof and enters the hood under compression. The bulge or enlargement 20, however, allows the air to quickly expand, and in doing so, the cinders, dust, or moisture is released, and falls by gravity out of the hood, while the purified air, in a gentle flow, passes upwardly toward and through the screen 11 by which it is further cleansed, and into the car.

It is obvious that the hood may, if desired, be stamped out of a single sheet of metal, and the frame 5 and its movable part 6 may also be composed of the same material.

What I claim and desire to secure by Letters Patent is 1. A ventilator comprising a frame, an aperture provided in said frame above its vertical center, a screen provided in said aperture, and a hood, the lower portion of which is'curved to form substantially a segment of a circle, having its center on a line at approximately the vertical center of the lower closed portion of the frame, and the Copies of this patent may be obtained for upper portion of the hood extending on a line tangential to said circle, and connected to the frame above the screen, the ends of said hood being closed, and an inlet opening being provided in the bottom of said hood.

2. A ventilator comprising a frame, a movable part adjustably secured thereto, an aperture provided in the frame above its vertical center, a screen provided in said aperture, and a hood, the lower portion of which is curved to form substantially a segment of a circle having its center on a line, at approximately the vertical center of the lower closed portion of the frame, and the upper portion of the hood extending on a line, tangential. to said circle and connected to the frame above the screen, the ends of said hood being closed and an inlet opening being provided in the bottom of said hood.

In testimony whereof I affix my signature, in the presence of two witnesses.

HOMER S. WILSON.

Vitnesses EULALA HILLIARD, KATHERINE MONTGOMERY.

five cents each, by addressing the Commissioner of Patents,

Washington, D. i. 

